Nudi Pixel: Nudibranchs and Sea Slugs Identification with Photographs

Comment from Richard Willan: Like you, I have trouble naming this individual with certainty. It most resembles Chromodoris colemani, but the orange longitudinal lines on the mantle, central brown smudge on the mantle, fewer gills, white secondary pinnae on the gills, and lack of a white marginal band are all different to Chromodoris colemani. Perhaps it is an undescribed species? In any event, the arrangement of the rhinophores, arising from the same base, it a mutation unique to this individual and has no taxonomic significance.